Wireless speaker



FIG. 1 is a front elevational view of a wireless speaker showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown are included for the purpose of illustrating portions of the wireless speaker that form no part of the claim. 

CLAIM The ornamental design for a wireless speaker, as shown and described. 